Reference Guide

540 | Link Layer Discovery Protocol (LLDP)
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TIA-1057 (LLDP-MED) Overview
Link Layer Discovery Protocol—Media Endpoint Discovery (LLDP-MED)—as defined by ANSI/
TIA-1057— provides additional organizationally specific TLVs so that endpoint devices and network
connectivity devices can advertise their characteristics and configuration information; the OUI for the
Telecommunications Industry Association (TIA) is 00-12-BB.
• LLDP-MED Endpoint Device—any device that is on an IEEE 802 LAN network edge can
communicate using IP and uses the LLDP-MED framework.
• LLDP-MED Network Connectivity Device—any device that provides access to an IEEE 802 LAN
to an LLDP-MED endpoint device and supports IEEE 802.1AB (LLDP) and TIA-1057 (LLDP-MED).
The Dell Force10 system is an LLDP-MED network connectivity device.
With regard to connected endpoint devices, LLDP-MED provides network connectivity devices with the
ability to:
• manage inventory
• manage Power over Ethernet (PoE)
• identify physical location
• identify network policy
LLDP-MED is designed for, but not limited to, VoIP endpoints.
127 Port and Protocol VLAN ID On Dell Force10 systems, indicates the tagged VLAN to which a port belongs
(and the untagged VLAN to which a port belongs if the port is in hybrid mode)
127 VLAN Name Indicates the user-defined alphanumeric string that identifies the VLAN. This
TLV is supported on C-Series only.
127 Protocol Identity Indicates the protocols that the port can process. FTOS does not currently
support this TLV.
IEEE 802.3 Organizationally Specific TLVs
127 MAC/PHY Configuration/Status Indicates the capability and current setting of the duplex status and bit rate, and
whether the current settings are the result of auto-negotiation. This TLV is not
available in the FTOS implementation of LLDP, but is available and mandatory
(non-configurable) in the LLDP-MED implementation.
127 Power via MDI
Dell Force10 supports LLDP-MED protocol, which recommends that Power
via MDI TLV be not implemented, and therefore Dell Force10 implements
Extended Power via MDI TLV only.
127 Link Aggregation Indicates whether the link is capable of being aggregated, whether it is currently
in a LAG, and the port identification of the LAG. FTOS does not currently
support this TLV.
127 Maximum Frame Size Indicates the maximum frame size capability of the MAC and PHY
Table 25-2. Optional TLV Types
Type TLV Description